2425781925 has 60 divisors (see below), whose sum is σ = 5135329056. Its totient is φ = 1108922400.

The previous prime is 2425781923. The next prime is 2425781929. The reversal of 2425781925 is 5291875242.

2425781925 is a `hidden beast` number, since 2 + 42 + 578 + 19 + 25 = 666.

2425781925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2425781925 - 2¹ = 2425781923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2425781923) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 71391 + ... + 99740.

Almost surely, 2^2425781925 is an apocalyptic number.

2425781925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2425781925 is an abundant number, since it is smaller than the sum of its proper divisors (2709547131).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2425781925 is a wasteful number, since it uses less digits than its factorization.

2425781925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171160 (or 171146 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 2425781925 is about 49252.2276145963. The cubic root of 2425781925 is about 1343.6430762587.

The spelling of 2425781925 in words is "two billion, four hundred twenty-five million, seven hundred eighty-one thousand, nine hundred twenty-five".