4061857401225 has 72 divisors (see below), whose sum is σ = 7835308430040. Its totient is φ = 1999572157440.

The previous prime is 4061857401197. The next prime is 4061857401227. The reversal of 4061857401225 is 5221047581604.

4061857401225 is a `hidden beast` number, since 4 + 0 + 6 + 18 + 5 + 7 + 401 + 225 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 2923238223504 + 1138619177721 = 1709748^2 + 1067061^2 .

It is not a de Polignac number, because 4061857401225 - 2²⁹ = 4061320530313 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 (4061857401227) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82545229 + ... + 82594421.

It is an arithmetic number, because the mean of its divisors is an integer number (108823728195).

Almost surely, 2^{4061857401225} is an apocalyptic number.

4061857401225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4061857401225 is a deficient number, since it is larger than the sum of its proper divisors (3773451028815).

4061857401225 is a wasteful number, since it uses less digits than its factorization.

4061857401225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77451 (or 77443 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 4061857401225 in words is "four trillion, sixty-one billion, eight hundred fifty-seven million, four hundred one thousand, two hundred twenty-five".