1425655557 has 12 divisors (see below), whose sum is σ = 2167663680. Its totient is φ = 900413928.

The previous prime is 1425655523. The next prime is 1425655589. The reversal of 1425655557 is 7555565241.

1425655557 is a `hidden beast` number, since 1 + 42 + 5 + 6 + 55 + 557 = 666.

It is not a de Polignac number, because 1425655557 - 2²² = 1421461253 is a prime.

It is a super-3 number, since 3×1425655557³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425655507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4168413 + ... + 4168754.

It is an arithmetic number, because the mean of its divisors is an integer number (180638640).

Almost surely, 2^1425655557 is an apocalyptic number.

It is an amenable number.

1425655557 is a deficient number, since it is larger than the sum of its proper divisors (742008123).

1425655557 is a wasteful number, since it uses less digits than its factorization.

1425655557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337192 (or 8337189 counting only the distinct ones).

The product of its digits is 1050000, while the sum is 45.

The square root of 1425655557 is about 37757.8542425281. The cubic root of 1425655557 is about 1125.4810931997.

The spelling of 1425655557 in words is "one billion, four hundred twenty-five million, six hundred fifty-five thousand, five hundred fifty-seven".