25537089421 has 8 divisors (see below), whose sum is σ = 26074751040. Its totient is φ = 25004999712.

The previous prime is 25537089407. The next prime is 25537089433. The reversal of 25537089421 is 12498073552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25537089421 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 (25537081421) 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 7 ways as a sum of consecutive naturals, for example, 1383715 + ... + 1402048.

It is an arithmetic number, because the mean of its divisors is an integer number (3259343880).

Almost surely, 2^25537089421 is an apocalyptic number.

It is an amenable number.

25537089421 is a deficient number, since it is larger than the sum of its proper divisors (537661619).

25537089421 is a wasteful number, since it uses less digits than its factorization.

25537089421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785955.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 25537089421 in words is "twenty-five billion, five hundred thirty-seven million, eighty-nine thousand, four hundred twenty-one".