25780074 has 16 divisors (see below), whose sum is σ = 54274080. Its totient is φ = 8141040.

The previous prime is 25780063. The next prime is 25780087. The reversal of 25780074 is 47008752.

It is a super-2 number, since 2×25780074² = 1329224430890952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112957 + ... + 113184.

It is an arithmetic number, because the mean of its divisors is an integer number (3392130).

Almost surely, 2^25780074 is an apocalyptic number.

25780074 is an abundant number, since it is smaller than the sum of its proper divisors (28494006).

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

25780074 is a wasteful number, since it uses less digits than its factorization.

25780074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226165.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 25780074 is about 5077.4081971021. The cubic root of 25780074 is about 295.4119457864.

The spelling of 25780074 in words is "twenty-five million, seven hundred eighty thousand, seventy-four".