25255380 has 48 divisors (see below), whose sum is σ = 73793664. Its totient is φ = 6441600.

The previous prime is 25255367. The next prime is 25255393. The reversal of 25255380 is 8355252.

It is an interprime number because it is at equal distance from previous prime (25255367) and next prime (25255393).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its 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 15 ways as a sum of consecutive naturals, for example, 7771 + ... + 10530.

It is an arithmetic number, because the mean of its divisors is an integer number (1537368).

Almost surely, 2^25255380 is an apocalyptic number.

25255380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25255380 is an abundant number, since it is smaller than the sum of its proper divisors (48538284).

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

25255380 is a wasteful number, since it uses less digits than its factorization.

25255380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18336 (or 18334 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 25255380 is about 5025.4731120562. The cubic root of 25255380 is about 293.3940502183.

The spelling of 25255380 in words is "twenty-five million, two hundred fifty-five thousand, three hundred eighty".