145625553 has 16 divisors (see below), whose sum is σ = 228432960. Its totient is φ = 91372608.

The previous prime is 145625533. The next prime is 145625573. The reversal of 145625553 is 355526541.

145625553 is a `hidden beast` number, since 1 + 45 + 62 + 5 + 553 = 666.

It is an interprime number because it is at equal distance from previous prime (145625533) and next prime (145625573).

It is not a de Polignac number, because 145625553 - 2⁸ = 145625297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145625533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158175 + ... + 159092.

It is an arithmetic number, because the mean of its divisors is an integer number (14277060).

Almost surely, 2^145625553 is an apocalyptic number.

It is an amenable number.

145625553 is a deficient number, since it is larger than the sum of its proper divisors (82807407).

145625553 is a wasteful number, since it uses less digits than its factorization.

145625553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317293 (or 317287 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 145625553 is about 12067.5412988728. The cubic root of 145625553 is about 526.1131971195.

The spelling of 145625553 in words is "one hundred forty-five million, six hundred twenty-five thousand, five hundred fifty-three".