61725223402431 has 32 divisors (see below), whose sum is σ = 86785257100800. Its totient is φ = 38915377119360.

The previous prime is 61725223402421. The next prime is 61725223402481. The reversal of 61725223402431 is 13420432252716.

It is not a de Polignac number, because 61725223402431 - 2¹⁷ = 61725223271359 is a prime.

It is a super-2 number, since 2×61725223402431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61725223402421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112762126 + ... + 113308196.

It is an arithmetic number, because the mean of its divisors is an integer number (2712039284400).

Almost surely, 2^{61725223402431} is an apocalyptic number.

61725223402431 is a deficient number, since it is larger than the sum of its proper divisors (25060033698369).

61725223402431 is a wasteful number, since it uses less digits than its factorization.

61725223402431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549599.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 61725223402431 in words is "sixty-one trillion, seven hundred twenty-five billion, two hundred twenty-three million, four hundred two thousand, four hundred thirty-one".