40697025 has 24 divisors (see below), whose sum is σ = 67718880. Its totient is φ = 21565440.

The previous prime is 40697021. The next prime is 40697053. The reversal of 40697025 is 52079604.

It is not a de Polignac number, because 40697025 - 2² = 40697021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40697021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10561 + ... + 13889.

It is an arithmetic number, because the mean of its divisors is an integer number (2821620).

Almost surely, 2^40697025 is an apocalyptic number.

It is an amenable number.

40697025 is a deficient number, since it is larger than the sum of its proper divisors (27021855).

40697025 is a wasteful number, since it uses less digits than its factorization.

40697025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 40697025 is about 6379.4219957611. The cubic root of 40697025 is about 343.9702544363.

The spelling of 40697025 in words is "forty million, six hundred ninety-seven thousand, twenty-five".