25134312551 has 4 divisors (see below), whose sum is σ = 25300765104. Its totient is φ = 24967860000.

The previous prime is 25134312547. The next prime is 25134312563. The reversal of 25134312551 is 15521343152.

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

It is a cyclic number.

It is not a de Polignac number, because 25134312551 - 2² = 25134312547 is a prime.

It is a super-2 number, since 2×25134312551² (a number of 22 digits) 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 (25134312521) 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, 83226050 + ... + 83226351.

It is an arithmetic number, because the mean of its divisors is an integer number (6325191276).

Almost surely, 2^25134312551 is an apocalyptic number.

25134312551 is a deficient number, since it is larger than the sum of its proper divisors (166452553).

25134312551 is a wasteful number, since it uses less digits than its factorization.

25134312551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166452552.

The product of its digits is 18000, while the sum is 32.

The spelling of 25134312551 in words is "twenty-five billion, one hundred thirty-four million, three hundred twelve thousand, five hundred fifty-one".