25601422 has 72 divisors (see below), whose sum is σ = 52399872. Its totient is φ = 9313920.

The previous prime is 25601399. The next prime is 25601423. The reversal of 25601422 is 22410652.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 25601393 and 25601402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25601423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 201523 + ... + 201649.

It is an arithmetic number, because the mean of its divisors is an integer number (727776).

Almost surely, 2^25601422 is an apocalyptic number.

25601422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25601422 is an abundant number, since it is smaller than the sum of its proper divisors (26798450).

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

25601422 is a wasteful number, since it uses less digits than its factorization.

25601422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 25601422 is about 5059.7847780316. The cubic root of 25601422 is about 294.7279767619.

It can be divided in two parts, 256014 and 22, that added together give a square (256036 = 506²).

The spelling of 25601422 in words is "twenty-five million, six hundred one thousand, four hundred twenty-two".