891925545 has 32 divisors (see below), whose sum is σ = 1633386240. Its totient is φ = 407128320.

The previous prime is 891925543. The next prime is 891925549. The reversal of 891925545 is 545529198.

It is not a de Polignac number, because 891925545 - 2¹ = 891925543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 891925494 and 891925503.

It is not an unprimeable number, because it can be changed into a prime (891925543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68455 + ... + 80435.

It is an arithmetic number, because the mean of its divisors is an integer number (51043320).

Almost surely, 2^891925545 is an apocalyptic number.

It is an amenable number.

891925545 is a deficient number, since it is larger than the sum of its proper divisors (741460695).

891925545 is a wasteful number, since it uses less digits than its factorization.

891925545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12705.

The product of its digits is 648000, while the sum is 48.

The square root of 891925545 is about 29865.1225512302. The cubic root of 891925545 is about 962.5933730745.

The spelling of 891925545 in words is "eight hundred ninety-one million, nine hundred twenty-five thousand, five hundred forty-five".