25337982497 has 4 divisors (see below), whose sum is σ = 25429455636. Its totient is φ = 25246509360.

The previous prime is 25337982487. The next prime is 25337982541. The reversal of 25337982497 is 79428973352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11025210001 + 14312772496 = 105001^2 + 119636^2 .

It is a cyclic number.

It is not a de Polignac number, because 25337982497 - 2⁶ = 25337982433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25337982487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45736154 + ... + 45736707.

It is an arithmetic number, because the mean of its divisors is an integer number (6357363909).

Almost surely, 2^25337982497 is an apocalyptic number.

It is an amenable number.

25337982497 is a deficient number, since it is larger than the sum of its proper divisors (91473139).

25337982497 is an equidigital number, since it uses as much as digits as its factorization.

25337982497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91473138.

The product of its digits is 22861440, while the sum is 59.

The spelling of 25337982497 in words is "twenty-five billion, three hundred thirty-seven million, nine hundred eighty-two thousand, four hundred ninety-seven".