25155630041550 has 24 divisors (see below), whose sum is σ = 62385962503416. Its totient is φ = 6708168011040.

The previous prime is 25155630041501. The next prime is 25155630041561. The reversal of 25155630041550 is 5514003655152.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83852099989 + ... + 83852100288.

It is an arithmetic number, because the mean of its divisors is an integer number (2599415104309).

Almost surely, 2^{25155630041550} is an apocalyptic number.

25155630041550 is an abundant number, since it is smaller than the sum of its proper divisors (37230332461866).

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

25155630041550 is a wasteful number, since it uses less digits than its factorization.

25155630041550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167704200292 (or 167704200287 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 25155630041550 in words is "twenty-five trillion, one hundred fifty-five billion, six hundred thirty million, forty-one thousand, five hundred fifty".