2925506891990 has 32 divisors (see below), whose sum is σ = 5412160212480. Its totient is φ = 1138145415264.

The previous prime is 2925506891987. The next prime is 2925506891999. The reversal of 2925506891990 is 991986055292.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27582692 + ... + 27688551.

It is an arithmetic number, because the mean of its divisors is an integer number (169130006640).

Almost surely, 2^{2925506891990} is an apocalyptic number.

2925506891990 is a deficient number, since it is larger than the sum of its proper divisors (2486653320490).

2925506891990 is a wasteful number, since it uses less digits than its factorization.

2925506891990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55271396.

The product of its (nonzero) digits is 31492800, while the sum is 65.

The spelling of 2925506891990 in words is "two trillion, nine hundred twenty-five billion, five hundred six million, eight hundred ninety-one thousand, nine hundred ninety".