15555625404 has 48 divisors (see below), whose sum is σ = 40961531520. Its totient is φ = 4551279040.

The previous prime is 15555625403. The next prime is 15555625417. The reversal of 15555625404 is 40452655551.

It is a super-3 number, since 3×15555625404³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15555625403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2027994 + ... + 2035649.

It is an arithmetic number, because the mean of its divisors is an integer number (853365240).

Almost surely, 2^15555625404 is an apocalyptic number.

It is an amenable number.

15555625404 is an abundant number, since it is smaller than the sum of its proper divisors (25405906116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15555625404 is a wasteful number, since it uses less digits than its factorization.

15555625404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063690 (or 4063688 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 15555625404 in words is "fifteen billion, five hundred fifty-five million, six hundred twenty-five thousand, four hundred four".