25401552 has 40 divisors (see below), whose sum is σ = 71587680. Its totient is φ = 7697280.

The previous prime is 25401539. The next prime is 25401583. The reversal of 25401552 is 25510452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 23527 + ... + 24582.

It is an arithmetic number, because the mean of its divisors is an integer number (1789692).

Almost surely, 2^25401552 is an apocalyptic number.

25401552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25401552 is an abundant number, since it is smaller than the sum of its proper divisors (46186128).

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

25401552 is a wasteful number, since it uses less digits than its factorization.

25401552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48131 (or 48125 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25401552 is about 5039.9952380930. The cubic root of 25401552 is about 293.9589928460.

Subtracting 25401552 from its reverse (25510452), we obtain a square (108900 = 330²).

The spelling of 25401552 in words is "twenty-five million, four hundred one thousand, five hundred fifty-two".