25277012397 has 48 divisors (see below), whose sum is σ = 46890724608. Its totient is φ = 12753227520.

The previous prime is 25277012357. The next prime is 25277012417. The reversal of 25277012397 is 79321077252.

25277012397 is a `hidden beast` number, since 252 + 7 + 7 + 0 + 1 + 2 + 397 = 666.

It is not a de Polignac number, because 25277012397 - 2⁷ = 25277012269 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25277012317) 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 47 ways as a sum of consecutive naturals, for example, 652104 + ... + 689777.

It is an arithmetic number, because the mean of its divisors is an integer number (976890096).

Almost surely, 2^25277012397 is an apocalyptic number.

It is an amenable number.

25277012397 is a deficient number, since it is larger than the sum of its proper divisors (21613712211).

25277012397 is a wasteful number, since it uses less digits than its factorization.

25277012397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341930 (or 1341927 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 25277012397 in words is "twenty-five billion, two hundred seventy-seven million, twelve thousand, three hundred ninety-seven".