1925125545 has 32 divisors (see below), whose sum is σ = 3525172992. Its totient is φ = 878821632.

The previous prime is 1925125541. The next prime is 1925125561. The reversal of 1925125545 is 5455215291.

It is not a de Polignac number, because 1925125545 - 2² = 1925125541 is a prime.

It is a super-2 number, since 2×1925125545² = 7412216728023094050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1925125541) 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, 64459 + ... + 89471.

It is an arithmetic number, because the mean of its divisors is an integer number (110161656).

Almost surely, 2^1925125545 is an apocalyptic number.

1925125545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1925125545 is a deficient number, since it is larger than the sum of its proper divisors (1600047447).

1925125545 is a wasteful number, since it uses less digits than its factorization.

1925125545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25761.

The product of its digits is 90000, while the sum is 39.

The square root of 1925125545 is about 43876.2526316913. The cubic root of 1925125545 is about 1243.9980099516.

The spelling of 1925125545 in words is "one billion, nine hundred twenty-five million, one hundred twenty-five thousand, five hundred forty-five".