25720074 has 12 divisors (see below), whose sum is σ = 55726866. Its totient is φ = 8573352.

The previous prime is 25720073. The next prime is 25720087. The reversal of 25720074 is 47002752.

It can be written as a sum of positive squares in only one way, i.e., 17164449 + 8555625 = 4143^2 + 2925^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25720073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 714429 + ... + 714464.

Almost surely, 2^25720074 is an apocalyptic number.

25720074 is an abundant number, since it is smaller than the sum of its proper divisors (30006792).

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

25720074 is a wasteful number, since it uses less digits than its factorization.

25720074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428901 (or 1428898 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 25720074 is about 5071.4962289250. The cubic root of 25720074 is about 295.1825892523.

The spelling of 25720074 in words is "twenty-five million, seven hundred twenty thousand, seventy-four".