1925557442 has 8 divisors (see below), whose sum is σ = 2890720956. Its totient is φ = 961983792.

The previous prime is 1925557423. The next prime is 1925557471. The reversal of 1925557442 is 2447555291.

It can be written as a sum of positive squares in 2 ways, for example, as 1821497041 + 104060401 = 42679^2 + 10201^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1925557393 and 1925557402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394433 + ... + 399284.

Almost surely, 2^1925557442 is an apocalyptic number.

1925557442 is a deficient number, since it is larger than the sum of its proper divisors (965163514).

1925557442 is a wasteful number, since it uses less digits than its factorization.

1925557442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794932.

The product of its digits is 504000, while the sum is 44.

The square root of 1925557442 is about 43881.1741182936. The cubic root of 1925557442 is about 1244.0910322544.

The spelling of 1925557442 in words is "one billion, nine hundred twenty-five million, five hundred fifty-seven thousand, four hundred forty-two".