18407060219025 has 135 divisors (see below), whose sum is σ = 34637073919371. Its totient is φ = 9663779014560.

The previous prime is 18407060218997. The next prime is 18407060219027. The reversal of 18407060219025 is 52091206070481.

The square root of 18407060219025 is 4290345.

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

18407060219025 is a `hidden beast` number, since 1 + 8 + 4 + 0 + 7 + 0 + 602 + 19 + 0 + 25 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6626541678849 + 11780518540176 = 2574207^2 + 3432276^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 18407060219025 - 2³⁵ = 18372700480657 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (18407060219027) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 12935389464 + ... + 12935390886.

Almost surely, 2^{18407060219025} is an apocalyptic number.

18407060219025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18407060219025 is the 4290345-th square number.

18407060219025 is the 2145173-rd centered octagonal number.

It is an amenable number.

18407060219025 is a deficient number, since it is larger than the sum of its proper divisors (16230013700346).

18407060219025 is an frugal number, since it uses more digits than its factorization.

18407060219025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 18407060219025 in words is "eighteen trillion, four hundred seven billion, sixty million, two hundred nineteen thousand, twenty-five".