1925555797 has 8 divisors (see below), whose sum is σ = 2101135680. Its totient is φ = 1750064160.

The previous prime is 1925555783. The next prime is 1925555861. The reversal of 1925555797 is 7975555291.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1925555797 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 (1925555747) 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, 28648 + ... + 68350.

It is an arithmetic number, because the mean of its divisors is an integer number (262641960).

Almost surely, 2^1925555797 is an apocalyptic number.

It is an amenable number.

1925555797 is a deficient number, since it is larger than the sum of its proper divisors (175579883).

1925555797 is a wasteful number, since it uses less digits than its factorization.

1925555797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44123.

The product of its digits is 4961250, while the sum is 55.

The square root of 1925555797 is about 43881.1553744885. The cubic root of 1925555797 is about 1244.0906779795.

The spelling of 1925555797 in words is "one billion, nine hundred twenty-five million, five hundred fifty-five thousand, seven hundred ninety-seven".