25340157 has 6 divisors (see below), whose sum is σ = 36602462. Its totient is φ = 16893432.

The previous prime is 25340131. The next prime is 25340177. The reversal of 25340157 is 75104352.

It is a happy number.

25340157 is a `hidden beast` number, since 253 + 401 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20169081 + 5171076 = 4491^2 + 2274^2 .

It is not a de Polignac number, because 25340157 - 2⁶ = 25340093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25340157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1407778 + ... + 1407795.

Almost surely, 2^25340157 is an apocalyptic number.

It is an amenable number.

25340157 is a deficient number, since it is larger than the sum of its proper divisors (11262305).

25340157 is a wasteful number, since it uses less digits than its factorization.

25340157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815579 (or 2815576 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 25340157 is about 5033.9007737539. The cubic root of 25340157 is about 293.7219709487.

The spelling of 25340157 in words is "twenty-five million, three hundred forty thousand, one hundred fifty-seven".