40570725 has 24 divisors (see below), whose sum is σ = 72238432. Its totient is φ = 19972800.

The previous prime is 40570709. The next prime is 40570741. The reversal of 40570725 is 52707504.

It is an interprime number because it is at equal distance from previous prime (40570709) and next prime (40570741).

It is not a de Polignac number, because 40570725 - 2⁴ = 40570709 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40570692 and 40570701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19831 + ... + 21780.

Almost surely, 2^40570725 is an apocalyptic number.

It is an amenable number.

40570725 is a deficient number, since it is larger than the sum of its proper divisors (31667707).

40570725 is a wasteful number, since it uses less digits than its factorization.

40570725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41637 (or 41632 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 40570725 is about 6369.5152876808. The cubic root of 40570725 is about 343.6140575408.

The spelling of 40570725 in words is "forty million, five hundred seventy thousand, seven hundred twenty-five".