25091340 has 24 divisors (see below), whose sum is σ = 70255920. Its totient is φ = 6691008.

The previous prime is 25091327. The next prime is 25091357. The reversal of 25091340 is 4319052.

It is a self number, because there is not a number n which added to its sum of digits gives 25091340.

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, 209035 + ... + 209154.

It is an arithmetic number, because the mean of its divisors is an integer number (2927330).

Almost surely, 2^25091340 is an apocalyptic number.

25091340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25091340 is an abundant number, since it is smaller than the sum of its proper divisors (45164580).

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

25091340 is a wasteful number, since it uses less digits than its factorization.

25091340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418201 (or 418199 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25091340 is about 5009.1256722107. The cubic root of 25091340 is about 292.7574473830.

The spelling of 25091340 in words is "twenty-five million, ninety-one thousand, three hundred forty".