25422780 has 24 divisors (see below), whose sum is σ = 71183952. Its totient is φ = 6779392.

The previous prime is 25422743. The next prime is 25422791. The reversal of 25422780 is 8722452.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 211797 + ... + 211916.

It is an arithmetic number, because the mean of its divisors is an integer number (2965998).

Almost surely, 2^25422780 is an apocalyptic number.

25422780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25422780 is an abundant number, since it is smaller than the sum of its proper divisors (45761172).

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

25422780 is a wasteful number, since it uses less digits than its factorization.

25422780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423725 (or 423723 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 25422780 is about 5042.1007526625. The cubic root of 25422780 is about 294.0408569254.

The spelling of 25422780 in words is "twenty-five million, four hundred twenty-two thousand, seven hundred eighty".