25513403551 has 8 divisors (see below), whose sum is σ = 25704779760. Its totient is φ = 25322102208.

The previous prime is 25513403501. The next prime is 25513403561. The reversal of 25513403551 is 15530431552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25513403551 - 2¹³ = 25513395359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25513403501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797965 + ... + 829321.

It is an arithmetic number, because the mean of its divisors is an integer number (3213097470).

Almost surely, 2^25513403551 is an apocalyptic number.

25513403551 is a deficient number, since it is larger than the sum of its proper divisors (191376209).

25513403551 is a wasteful number, since it uses less digits than its factorization.

25513403551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37433.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 25513403551 in words is "twenty-five billion, five hundred thirteen million, four hundred three thousand, five hundred fifty-one".