25025250249 has 12 divisors (see below), whose sum is σ = 36829614276. Its totient is φ = 16368716832.

The previous prime is 25025250233. The next prime is 25025250269. The reversal of 25025250249 is 94205252052.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8891169849 + 16134080400 = 94293^2 + 127020^2 .

It is not a de Polignac number, because 25025250249 - 2⁴ = 25025250233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25025250269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26231442 + ... + 26232395.

It is an arithmetic number, because the mean of its divisors is an integer number (3069134523).

Almost surely, 2^25025250249 is an apocalyptic number.

It is an amenable number.

25025250249 is a deficient number, since it is larger than the sum of its proper divisors (11804364027).

25025250249 is a wasteful number, since it uses less digits than its factorization.

25025250249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52463896 (or 52463893 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 25025250249 in words is "twenty-five billion, twenty-five million, two hundred fifty thousand, two hundred forty-nine".