25157029 has 4 divisors (see below), whose sum is σ = 25401376. Its totient is φ = 24912684.

The previous prime is 25157023. The next prime is 25157057. The reversal of 25157029 is 92075152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25157029 - 2⁹ = 25156517 is a prime.

It is a super-2 number, since 2×25157029² = 1265752216213682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25157023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122019 + ... + 122224.

It is an arithmetic number, because the mean of its divisors is an integer number (6350344).

Almost surely, 2^25157029 is an apocalyptic number.

It is an amenable number.

25157029 is a deficient number, since it is larger than the sum of its proper divisors (244347).

25157029 is a wasteful number, since it uses less digits than its factorization.

25157029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244346.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 25157029 is about 5015.6783190312. The cubic root of 25157029 is about 293.0127039264.

The spelling of 25157029 in words is "twenty-five million, one hundred fifty-seven thousand, twenty-nine".