2780690925 has 24 divisors (see below), whose sum is σ = 4621253824. Its totient is φ = 1475343360.

The previous prime is 2780690911. The next prime is 2780690953. The reversal of 2780690925 is 5290960872.

It is not a de Polignac number, because 2780690925 - 2⁴ = 2780690909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81577 + ... + 110526.

Almost surely, 2^2780690925 is an apocalyptic number.

2780690925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2780690925 is a deficient number, since it is larger than the sum of its proper divisors (1840562899).

2780690925 is a wasteful number, since it uses less digits than its factorization.

2780690925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192309 (or 192304 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 2780690925 is about 52732.2569685766. The cubic root of 2780690925 is about 1406.2123458560.

The spelling of 2780690925 in words is "two billion, seven hundred eighty million, six hundred ninety thousand, nine hundred twenty-five".