25355340 has 36 divisors (see below), whose sum is σ = 76911744. Its totient is φ = 6761376.

The previous prime is 25355333. The next prime is 25355357. The reversal of 25355340 is 4355352.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70252 + ... + 70611.

Almost surely, 2^25355340 is an apocalyptic number.

25355340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25355340 is an abundant number, since it is smaller than the sum of its proper divisors (51556404).

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

25355340 is a wasteful number, since it uses less digits than its factorization.

25355340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140878 (or 140873 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 25355340 is about 5035.4086229421. The cubic root of 25355340 is about 293.7806221283.

It can be divided in two parts, 2535 and 5340, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 25355340 in words is "twenty-five million, three hundred fifty-five thousand, three hundred forty".