2557154925 has 72 divisors (see below), whose sum is σ = 4945844904. Its totient is φ = 1255495680.

The previous prime is 2557154923. The next prime is 2557154969. The reversal of 2557154925 is 5294517552.

2557154925 is a `hidden beast` number, since 2 + 5 + 571 + 54 + 9 + 25 = 666.

2557154925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 247968009 + 2309186916 = 15747^2 + 48054^2 .

It is not a de Polignac number, because 2557154925 - 2¹ = 2557154923 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557154923) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1335769 + ... + 1337681.

Almost surely, 2^2557154925 is an apocalyptic number.

2557154925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2557154925 is a deficient number, since it is larger than the sum of its proper divisors (2388689979).

2557154925 is a wasteful number, since it uses less digits than its factorization.

2557154925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2391 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The square root of 2557154925 is about 50568.3193808139. The cubic root of 2557154925 is about 1367.4737976346.

The spelling of 2557154925 in words is "two billion, five hundred fifty-seven million, one hundred fifty-four thousand, nine hundred twenty-five".