25147422 has 20 divisors (see below), whose sum is σ = 56349216. Its totient is φ = 8382420.

The previous prime is 25147399. The next prime is 25147427. The reversal of 25147422 is 22474152.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25147427) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 77454 + ... + 77777.

Almost surely, 2^25147422 is an apocalyptic number.

25147422 is an abundant number, since it is smaller than the sum of its proper divisors (31201794).

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

25147422 is a wasteful number, since it uses less digits than its factorization.

25147422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155245 (or 155236 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 25147422 is about 5014.7205305979. The cubic root of 25147422 is about 292.9754004826.

The spelling of 25147422 in words is "twenty-five million, one hundred forty-seven thousand, four hundred twenty-two".