4015234478025 has 63 divisors (see below), whose sum is σ = 7465424211319. Its totient is φ = 2141314114320.

The previous prime is 4015234477981. The next prime is 4015234478041. The reversal of 4015234478025 is 5208744325104.

The square root of 4015234478025 is 2003805.

It is a perfect power (a square), and thus also a powerful number.

4015234478025 is a `hidden beast` number, since 4 + 0 + 1 + 523 + 4 + 47 + 80 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1445484412089 + 2569750065936 = 1202283^2 + 1603044^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4015234478025 is a prime.

It is a super-2 number, since 2×4015234478025² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 270506254 + ... + 270521096.

Almost surely, 2^{4015234478025} is an apocalyptic number.

4015234478025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4015234478025 is the 2003805-th square number.

4015234478025 is the 1001903-rd centered octagonal number.

It is an amenable number.

4015234478025 is a deficient number, since it is larger than the sum of its proper divisors (3450189733294).

4015234478025 is an frugal number, since it uses more digits than its factorization.

4015234478025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29714 (or 14851 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 4015234478025 in words is "four trillion, fifteen billion, two hundred thirty-four million, four hundred seventy-eight thousand, twenty-five".