1925557 has 2 divisors, whose sum is σ = 1925558. Its totient is φ = 1925556.

The previous prime is 1925533. The next prime is 1925563. The reversal of 1925557 is 7555291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1758276 + 167281 = 1326^2 + 409^2 .

It is an emirp because it is prime and its reverse (7555291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1925557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1925507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962778 + 962779.

It is an arithmetic number, because the mean of its divisors is an integer number (962779).

2^1925557 is an apocalyptic number.

It is an amenable number.

1925557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925557 is an equidigital number, since it uses as much as digits as its factorization.

1925557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 34.

The square root of 1925557 is about 1387.6444068997. The cubic root of 1925557 is about 124.4090937063.

The spelling of 1925557 in words is "one million, nine hundred twenty-five thousand, five hundred fifty-seven".