25162890 has 32 divisors (see below), whose sum is σ = 63944640. Its totient is φ = 6315264.

The previous prime is 25162883. The next prime is 25162903. The reversal of 25162890 is 9826152.

25162890 = T₂₀₂ + T₂₀₃ + ... + T₅₄₁.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24160 + ... + 25179.

It is an arithmetic number, because the mean of its divisors is an integer number (1998270).

Almost surely, 2^25162890 is an apocalyptic number.

25162890 is an abundant number, since it is smaller than the sum of its proper divisors (38781750).

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

25162890 is a wasteful number, since it uses less digits than its factorization.

25162890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49366.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 25162890 is about 5016.2625529372. The cubic root of 25162890 is about 293.0354571976.

The spelling of 25162890 in words is "twenty-five million, one hundred sixty-two thousand, eight hundred ninety".