25142929 has 8 divisors (see below), whose sum is σ = 29321600. Its totient is φ = 21550788.

The previous prime is 25142927. The next prime is 25142989. The reversal of 25142929 is 92924152.

It is not a de Polignac number, because 25142929 - 2¹ = 25142927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25142894 and 25142903.

It is not an unprimeable number, because it can be changed into a prime (25142927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36309 + ... + 36994.

It is an arithmetic number, because the mean of its divisors is an integer number (3665200).

Almost surely, 2^25142929 is an apocalyptic number.

It is an amenable number.

25142929 is a deficient number, since it is larger than the sum of its proper divisors (4178671).

25142929 is an frugal number, since it uses more digits than its factorization.

25142929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73324 (or 73310 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 25142929 is about 5014.2725294902. The cubic root of 25142929 is about 292.9579511542.

The spelling of 25142929 in words is "twenty-five million, one hundred forty-two thousand, nine hundred twenty-nine".