1025434534 has 4 divisors (see below), whose sum is σ = 1538151804. Its totient is φ = 512717266.

The previous prime is 1025434489. The next prime is 1025434537. The reversal of 1025434534 is 4354345201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4354345201 = 17 ⋅256137953.

It is a junction number, because it is equal to n+sod(n) for n = 1025434496 and 1025434505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025434537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256358632 + ... + 256358635.

It is an arithmetic number, because the mean of its divisors is an integer number (384537951).

Almost surely, 2^1025434534 is an apocalyptic number.

1025434534 is a deficient number, since it is larger than the sum of its proper divisors (512717270).

1025434534 is an equidigital number, since it uses as much as digits as its factorization.

1025434534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512717269.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1025434534 is about 32022.4067490250. The cubic root of 1025434534 is about 1008.4072972693.

Adding to 1025434534 its reverse (4354345201), we get a palindrome (5379779735).

The spelling of 1025434534 in words is "one billion, twenty-five million, four hundred thirty-four thousand, five hundred thirty-four".