25140291 has 12 divisors (see below), whose sum is σ = 36845256. Its totient is φ = 15236320.

The previous prime is 25140289. The next prime is 25140301. The reversal of 25140291 is 19204152.

It is not a de Polignac number, because 25140291 - 2¹ = 25140289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25140281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34266 + ... + 34991.

It is an arithmetic number, because the mean of its divisors is an integer number (3070438).

Almost surely, 2^25140291 is an apocalyptic number.

25140291 is a deficient number, since it is larger than the sum of its proper divisors (11704965).

25140291 is a wasteful number, since it uses less digits than its factorization.

25140291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69282 (or 69271 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 25140291 is about 5014.0094734653. The cubic root of 25140291 is about 292.9477050647.

The spelling of 25140291 in words is "twenty-five million, one hundred forty thousand, two hundred ninety-one".