25397070 has 32 divisors (see below), whose sum is σ = 62106912. Its totient is φ = 6644352.

The previous prime is 25397041. The next prime is 25397077. The reversal of 25397070 is 7079352.

It is a super-2 number, since 2×25397070² = 1290022329169800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6397 + ... + 9576.

It is an arithmetic number, because the mean of its divisors is an integer number (1940841).

Almost surely, 2^25397070 is an apocalyptic number.

25397070 is an abundant number, since it is smaller than the sum of its proper divisors (36709842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25397070 is a wasteful number, since it uses less digits than its factorization.

25397070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16036.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 25397070 is about 5039.5505752001. The cubic root of 25397070 is about 293.9417025415.

The spelling of 25397070 in words is "twenty-five million, three hundred ninety-seven thousand, seventy".