145625831 has 4 divisors (see below), whose sum is σ = 156827832. Its totient is φ = 134423832.

The previous prime is 145625827. The next prime is 145625833. The reversal of 145625831 is 138526541.

145625831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138526541 = 2333 ⋅59377.

It is a cyclic number.

It is not a de Polignac number, because 145625831 - 2² = 145625827 is a prime.

It is a super-2 number, since 2×145625831² = 42413765308881122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145625791 and 145625800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145625833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600981 + ... + 5601006.

It is an arithmetic number, because the mean of its divisors is an integer number (39206958).

Almost surely, 2^145625831 is an apocalyptic number.

145625831 is a deficient number, since it is larger than the sum of its proper divisors (11202001).

145625831 is a wasteful number, since it uses less digits than its factorization.

145625831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11202000.

The product of its digits is 28800, while the sum is 35.

The square root of 145625831 is about 12067.5528173694. The cubic root of 145625831 is about 526.1135319036.

The spelling of 145625831 in words is "one hundred forty-five million, six hundred twenty-five thousand, eight hundred thirty-one".