120405725 has 48 divisors (see below), whose sum is σ = 170614080. Its totient is φ = 83520000.

The previous prime is 120405683. The next prime is 120405731. The reversal of 120405725 is 527504021.

It is not a de Polignac number, because 120405725 - 2⁸ = 120405469 is a prime.

It is a super-2 number, since 2×120405725² = 28995077225551250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120405694 and 120405703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 665135 + ... + 665315.

It is an arithmetic number, because the mean of its divisors is an integer number (3554460).

Almost surely, 2^120405725 is an apocalyptic number.

It is an amenable number.

120405725 is a deficient number, since it is larger than the sum of its proper divisors (50208355).

120405725 is a wasteful number, since it uses less digits than its factorization.

120405725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 120405725 is about 10972.9542512488. The cubic root of 120405725 is about 493.7976805954.

Adding to 120405725 its reverse (527504021), we get a palindrome (647909746).

The spelling of 120405725 in words is "one hundred twenty million, four hundred five thousand, seven hundred twenty-five".