25402830 has 32 divisors (see below), whose sum is σ = 61108128. Its totient is φ = 6758400.

The previous prime is 25402823. The next prime is 25402837. The reversal of 25402830 is 3820452.

It is an interprime number because it is at equal distance from previous prime (25402823) and next prime (25402837).

It is a self number, because there is not a number n which added to its sum of digits gives 25402830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402837) 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, 18570 + ... + 19890.

It is an arithmetic number, because the mean of its divisors is an integer number (1909629).

Almost surely, 2^25402830 is an apocalyptic number.

25402830 is an abundant number, since it is smaller than the sum of its proper divisors (35705298).

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

25402830 is a wasteful number, since it uses less digits than its factorization.

25402830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25402830 is about 5040.1220223324. The cubic root of 25402830 is about 293.9639226405.

The spelling of 25402830 in words is "twenty-five million, four hundred two thousand, eight hundred thirty".