40179925 has 12 divisors (see below), whose sum is σ = 52754436. Its totient is φ = 30252800.

The previous prime is 40179913. The next prime is 40179929. The reversal of 40179925 is 52997104.

It can be written as a sum of positive squares in 6 ways, for example, as 1962801 + 38217124 = 1401^2 + 6182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40179925 is a prime.

It is a super-2 number, since 2×40179925² = 3228852746011250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40179929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46846 + ... + 47695.

It is an arithmetic number, because the mean of its divisors is an integer number (4396203).

Almost surely, 2^40179925 is an apocalyptic number.

It is an amenable number.

40179925 is a deficient number, since it is larger than the sum of its proper divisors (12574511).

40179925 is a wasteful number, since it uses less digits than its factorization.

40179925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94568 (or 94563 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 40179925 is about 6338.7636807188. The cubic root of 40179925 is about 342.5072014399.

The spelling of 40179925 in words is "forty million, one hundred seventy-nine thousand, nine hundred twenty-five".