1925689321 has 2 divisors, whose sum is σ = 1925689322. Its totient is φ = 1925689320.

The previous prime is 1925689303. The next prime is 1925689327. The reversal of 1925689321 is 1239865291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1647466921 + 278222400 = 40589^2 + 16680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1925689321 - 2⁵ = 1925689289 is a prime.

It is a super-2 number, since 2×1925689321² = 7416558722026882082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1925689327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962844660 + 962844661.

It is an arithmetic number, because the mean of its divisors is an integer number (962844661).

Almost surely, 2^1925689321 is an apocalyptic number.

It is an amenable number.

1925689321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925689321 is an equidigital number, since it uses as much as digits as its factorization.

1925689321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 1925689321 is about 43882.6767756936. The cubic root of 1925689321 is about 1244.1194336811.

The spelling of 1925689321 in words is "one billion, nine hundred twenty-five million, six hundred eighty-nine thousand, three hundred twenty-one".