2925506891991 has 8 divisors (see below), whose sum is σ = 3906742228480. Its totient is φ = 1947304741752.

The previous prime is 2925506891987. The next prime is 2925506891999. The reversal of 2925506891991 is 1991986055292.

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

It is not a de Polignac number, because 2925506891991 - 2² = 2925506891987 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 (2925506891999) 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, 758294311 + ... + 758298168.

It is an arithmetic number, because the mean of its divisors is an integer number (488342778560).

Almost surely, 2^{2925506891991} is an apocalyptic number.

2925506891991 is a deficient number, since it is larger than the sum of its proper divisors (981235336489).

2925506891991 is a wasteful number, since it uses less digits than its factorization.

2925506891991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516593125.

The product of its (nonzero) digits is 31492800, while the sum is 66.

The spelling of 2925506891991 in words is "two trillion, nine hundred twenty-five billion, five hundred six million, eight hundred ninety-one thousand, nine hundred ninety-one".